Anime

Sora no Otoshimono or Heaven's Lost Property is a 2009 TV anime series based on the manga of the same name by Suu Minazuki, serialized in Kadokawa Shoten's manga magazine Shōnen Ace. The story revolves around Tomoki Sakurai, a teenage boy struggling for a life of peace and quiet. His already-ruined life worsens when he encounters a U.M.A, (Unidentified Mysterious Animal) named Ikaros, an Angeloid who fell from the sky, and later encounters other Angeloids as the series progresses. The anime follows up to the Harpies arc of the manga, with subtle changes to the story's plot.

The show is directed by Hisashi Saitō, written by Yūko Kakihara, and the music is by Motoyoshi Iwasaki.

Season 1

 * Title: Sora no Otoshimono
 * Networks: TV Saitama, Chiba TV, KBS Kyoto, tvk, Sun Television, TVQ, Tokyo MX, TV Aichi
 * Airdates: October 4, 2009 – December 27, 2009
 * North America Licensing: Funimation

Season 2 "Forte"

 * Title: Sora no Otoshimono: Forte (そらのおとしもの f （フォルテ）
 * Networks: TV Saitama, Chiba TV, KBS Kyoto, tvk, Sun Television, TVQ Kyushu Broadcasting, Tokyo MX, TV Aichi
 * Airdates: October 1, 2010 – December 17, 2010
 * North America Licensing: Funimation

Theme Music
The opening theme for the first season is "Ring My Bell" by Blue Drops, consisting of singers Hitomi Yoshida and Ikaros (Saori Hayami), while multiple ending themes were used for each episode aired. For the second season, the opening theme for episode 1 is a cover of "Ring My Bell" sung by Soichiro Hoshi, while the opening theme from episode 2 onwards is "Heart no Kakuritsu" (ハートの確率 Hāto no Kakuritsu?, "Probabilities of the Heart") by Blue Drops. Multiple ending themes were used for each episode, as it did with the first season.

Season 1 Music
Opening Theme: "Ring My Bell" by Blue Drops

Ending Themes:

'Soba ni Irareru Dake de (そばにいられるだけで )' by Blue Drops (eps 1,14)

'Misaki Meguri (岬めぐり)' by Mina (ep 2)

'Taiyou ga Kureta Kisetsu (太陽がくれた季節)' by Saori Hayami, Mina, Ayahi Takagaki, Soichiro Hoshi and Tatsuhisa Suzuki (ep 3)

'Senshi no Kyuusoku (戦士の休息)' by Soichiro Hoshi (ep 4)

'Yuke! Yuke! Kawaguchi Hiroshi (ゆけ!ゆけ!川口浩)' by Tatsuo Kamon (ep 5)

'Natsu-iro no Nancy (夏色のナンシー)' by Iori Nomizu (ep 6)

'Furimuku na Kimi wa Utsukushii (ふり向くな君は美しい)' by Saori Hayami, Iori Nomizu, Mina, Ayahi Takagaki, Soichiro Hoshi and Tatsuhisa Suzuki (ep 7)

'Wild Seven (ワイルドセブン)' by Soichiro Hoshi and Tatsuhisa Suzuki (ep 8)

'Hatsukoi (初恋)' by Saori Hayami and Ayahi Takagaki (ep 9)

'Bokura no Diary (僕等のダイアリー)' by Ayahi Takagaki and Tatsuhisa Suzuki (ep 10)

'Champion (チャンピオン)' by Soichiro Hoshi and Saki Fujita (ep 11)

'Akai Hana Shiroi Hana (赤い花白い花)' by Saori Hayami (ep 12)

'Haru Ichiban (春一番)' by Saori Hayami, Iori Nomizu and Mina (ep 13)

Season 2 "Forte" Music
Opening Theme:  "Heart no Kakuritsu" (ハートの確率Hāto no Kakuritsu)  by Blue Drops

Ending Themes:

"Kaeru Kara" (帰るから, "From Home") by Blue Drops (episode 1)

"COSMOS" by Blue Drops (episode 2)

"Kakemeguru Seishun" (かけめぐる青春)  by Mina and Ayahi Takagaki (episode 3)

"Miracle Guy" (ミラクル・ガイMirakuru Gai)  by Kaori Fukuhara (episode 4)

"ff (Fortissimo)" (ff (フォルティシモ)Forutishimo) <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  "> by Mina (episode 5)

<span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center; ">"Soldier in the Space" <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  ">(ソルジャー・イン・ザ・スペースSorujā in za Supēsu) <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  "> by Soichiro Hoshi and Tatsuhisa Suzuki (episode 6)

<span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center; ">"Kaerazaru Hi no Tame ni" <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  ">(帰らざる日のために, "For the Day of No Return") <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  "> by Soichiro Hoshi, Saori Hayami, Mina, Tatsuhisa Suzuki, Ayahi Takagaki, Iori Nomizu and Kaori Fukuhara (episode 7)

<span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center; ">"Odoriko" <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  ">(踊り子, "Dancer") <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  "> by Saori Hayami and Ayahi Takagaki (episode 8)

<span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center; ">"Natsu no Ojō-san" <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  ">(夏のお嬢さん, "Summertime Girl") <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  "> by Iori Nomizu (episode 9)

<span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center; ">"Bōkyō no Tabi" <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  ">(望郷の旅, "Journey of Nostalgia") <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  "> by Soichiro Hoshi and Saki Fujita (episode 10)

<span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center; ">"Kaeru Kara" <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  ">(帰るから, "From Home") <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  ">(Guitar Version) by Blue Drops (episode 11) <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center; ">Jidai Okure no Koibito-tachi <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  ">(時代遅れの恋人たち, "Old-Fashioned Lovers") <span style="color: rgb(0, 0, 0); font-family: sans-serif; font-style: normal; line-height: 19px; text-align: center;  "> by Saori Hayami, Iori Nomizu and Kaori Fukuhara (episode 12)